Cite

249, 4722. Ahern Pass with a Hanging Glacier, Glacier National Park.

MLA

McClintock, Walter, 1870-1949. 249, 4722. Ahern Pass with a Hanging Glacier, Glacier National Park.. Box 61, folder 3078. 1938. https://collections.library.yale.edu/catalog/2008730.

APA, 6th edition

McClintock, Walter, 1870-1949. (["Box 61, folder 3078"])(1938)[249, 4722. Ahern Pass with a Hanging Glacier, Glacier National Park.]. https://collections.library.yale.edu/catalog/2008730.